GEOL 1001 Lecture : Notes
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Quiz: the character of a lava flow depends on the viscosity of the lava erupted. _______ lava is less viscous than _________ lava and thus flows out as a _______: basaltic / rhyolitic / thin sheet. Quiz: which of the following is not a form of lava: aa, andesite, lapilli, pahoehoe. Quiz: which of the following statements is true of low viscosity lava: has low silica content, is typically basalt, could build a shield volcano. An avalanche of hot ash flowing down the flanks of a volcano is known as a __________: tiny shards of glass / pyroclastic flow. Quiz: true/false: volcanoes erupt lava, pyroclastic debris, and gas: true. Quiz: a lahar is _________: a volcanic mudflow and debris flow. Clastic sedimentary rocks: lithification, burial- more sediment is added onto previous layers, cementation- minerals grow in pores, (precipitation from groundwater) and fill spaces- acts like glue to hold sediment together.
